CVE-2019-14243

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    CVE-2019-14243

    Published: 23 Jul 2019Last Modified: 8 Jul 2026

    Summary:

    Details: headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service (webserver panic and daemon crash) via a crafted HAProxy PROXY v2 request with truncated source/destination address data.

    References: https://caddy.community/t/dos-in-http-proxyprotocol-plugin/6014, https://github.com/mastercactapus/proxyprotocol/compare/ef496d7...5c4a101, https://github.com/mastercactapus/proxyprotocol/releases/tag/v0.0.2, https://github.com/mastercactapus/caddy-proxyprotocol/issues/8, https://github.com/mastercactapus/proxyprotocol/commit/5c4a101121fc3e868026189c7a73f7f19eef90ac, https://github.com/mastercactapus/proxyprotocol/issues/1

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -5a97537ed7ef91a97748d298142752911d75a5e1

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High